The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Perris it's possible to determine when it's a good idea to plant tomatos.

Planting Calendar for Tomatos

Frost tolerance for tomatos:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant tomatos until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant tomatos in Perris is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant tomatos and expect a good harvest is probably September. Any later than that and your tomatos may not have a chance to fully mature. If you are starting your tomatos indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on February 15 in Perris. It might get as low as 25°F during the coldest months of winter.

Keep in mind that USDA zone info for Perris is just an average and the actual date of last frost is different every year. Half of the time in Perris you get a frost after February 15 so be sure to be ready to protect your tomatos if you have a late frost.

USDA Zone Info for Perris

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Perris

You may be interested in your other planting guides for Perris.